5v x 500mA = 2500mW
5v x 700mA = 3500mW
i think that where my problem was. it drawns more power to the supply, an overload may happen to the chip responsible to sustain the required wattage.
actually i've already plugged this harddisk on one laptop, it was a disaster, :o after i have installed the OS and other softwares in about 2 hours, suddenly there was a "tick" sound and smell of burned IC.
i opened it up and i've found that an IC on the motherboard, near the interface of the harddisk was burned. i was thinking if it was just a coincidental and that the burned chip was really about to break.
am i right with my conclusion? any opinion? :?